Precalculus Examples

Solve for x 3|x+2|=2|x-1|-1
Step 1
Rewrite the equation as .
Step 2
Add to both sides of the equation.
Step 3
Divide each term in by and simplify.
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Step 3.1
Divide each term in by .
Step 3.2
Simplify the left side.
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Step 3.2.1
Cancel the common factor of .
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Step 3.2.1.1
Cancel the common factor.
Step 3.2.1.2
Divide by .
Step 4
Solve for .
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Step 4.1
Rewrite the equation as .
Step 4.2
Subtract from both sides of the equation.
Step 4.3
Multiply both sides of the equation by .
Step 4.4
Simplify both sides of the equation.
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Step 4.4.1
Simplify the left side.
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Step 4.4.1.1
Simplify .
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Step 4.4.1.1.1
Cancel the common factor of .
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Step 4.4.1.1.1.1
Cancel the common factor.
Step 4.4.1.1.1.2
Rewrite the expression.
Step 4.4.1.1.2
Cancel the common factor of .
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Step 4.4.1.1.2.1
Factor out of .
Step 4.4.1.1.2.2
Cancel the common factor.
Step 4.4.1.1.2.3
Rewrite the expression.
Step 4.4.2
Simplify the right side.
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Step 4.4.2.1
Simplify .
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Step 4.4.2.1.1
Apply the distributive property.
Step 4.4.2.1.2
Combine and .
Step 4.4.2.1.3
Cancel the common factor of .
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Step 4.4.2.1.3.1
Move the leading negative in into the numerator.
Step 4.4.2.1.3.2
Cancel the common factor.
Step 4.4.2.1.3.3
Rewrite the expression.
Step 4.4.2.1.4
Combine and .
Step 4.4.2.1.5
Move the negative in front of the fraction.
Step 5
Remove the absolute value term. This creates a on the right side of the equation because .
Step 6
The result consists of both the positive and negative portions of the .
Step 7
Solve for .
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Step 7.1
Solve for .
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Step 7.1.1
Rewrite the equation as .
Step 7.1.2
Move all terms not containing to the right side of the equation.
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Step 7.1.2.1
Add to both sides of the equation.
Step 7.1.2.2
To write as a fraction with a common denominator, multiply by .
Step 7.1.2.3
Combine and .
Step 7.1.2.4
Combine the numerators over the common denominator.
Step 7.1.2.5
Simplify the numerator.
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Step 7.1.2.5.1
Multiply by .
Step 7.1.2.5.2
Add and .
Step 7.1.3
Multiply both sides of the equation by .
Step 7.1.4
Simplify both sides of the equation.
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Step 7.1.4.1
Simplify the left side.
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Step 7.1.4.1.1
Simplify .
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Step 7.1.4.1.1.1
Cancel the common factor of .
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Step 7.1.4.1.1.1.1
Cancel the common factor.
Step 7.1.4.1.1.1.2
Rewrite the expression.
Step 7.1.4.1.1.2
Cancel the common factor of .
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Step 7.1.4.1.1.2.1
Factor out of .
Step 7.1.4.1.1.2.2
Cancel the common factor.
Step 7.1.4.1.1.2.3
Rewrite the expression.
Step 7.1.4.2
Simplify the right side.
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Step 7.1.4.2.1
Simplify .
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Step 7.1.4.2.1.1
Apply the distributive property.
Step 7.1.4.2.1.2
Combine and .
Step 7.1.4.2.1.3
Cancel the common factor of .
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Step 7.1.4.2.1.3.1
Cancel the common factor.
Step 7.1.4.2.1.3.2
Rewrite the expression.
Step 7.1.4.2.1.4
Combine and .
Step 7.2
Remove the absolute value term. This creates a on the right side of the equation because .
Step 7.3
The result consists of both the positive and negative portions of the .
Step 7.4
Solve for .
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Step 7.4.1
Move all terms containing to the left side of the equation.
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Step 7.4.1.1
Subtract from both sides of the equation.
Step 7.4.1.2
To write as a fraction with a common denominator, multiply by .
Step 7.4.1.3
Combine and .
Step 7.4.1.4
Combine the numerators over the common denominator.
Step 7.4.1.5
Subtract from .
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Step 7.4.1.5.1
Reorder and .
Step 7.4.1.5.2
Subtract from .
Step 7.4.1.6
Move the negative in front of the fraction.
Step 7.4.2
Move all terms not containing to the right side of the equation.
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Step 7.4.2.1
Add to both sides of the equation.
Step 7.4.2.2
Write as a fraction with a common denominator.
Step 7.4.2.3
Combine the numerators over the common denominator.
Step 7.4.2.4
Add and .
Step 7.4.3
Since the expression on each side of the equation has the same denominator, the numerators must be equal.
Step 7.4.4
Divide each term in by and simplify.
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Step 7.4.4.1
Divide each term in by .
Step 7.4.4.2
Simplify the left side.
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Step 7.4.4.2.1
Dividing two negative values results in a positive value.
Step 7.4.4.2.2
Divide by .
Step 7.4.4.3
Simplify the right side.
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Step 7.4.4.3.1
Divide by .
Step 7.5
Solve for .
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Step 7.5.1
Simplify .
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Step 7.5.1.1
Rewrite.
Step 7.5.1.2
Simplify by adding zeros.
Step 7.5.1.3
Apply the distributive property.
Step 7.5.2
Move all terms containing to the left side of the equation.
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Step 7.5.2.1
Add to both sides of the equation.
Step 7.5.2.2
To write as a fraction with a common denominator, multiply by .
Step 7.5.2.3
Combine and .
Step 7.5.2.4
Combine the numerators over the common denominator.
Step 7.5.2.5
Add and .
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Step 7.5.2.5.1
Reorder and .
Step 7.5.2.5.2
Add and .
Step 7.5.3
Move all terms not containing to the right side of the equation.
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Step 7.5.3.1
Add to both sides of the equation.
Step 7.5.3.2
Write as a fraction with a common denominator.
Step 7.5.3.3
Combine the numerators over the common denominator.
Step 7.5.3.4
Add and .
Step 7.5.3.5
Move the negative in front of the fraction.
Step 7.5.4
Since the expression on each side of the equation has the same denominator, the numerators must be equal.
Step 7.5.5
Divide each term in by and simplify.
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Step 7.5.5.1
Divide each term in by .
Step 7.5.5.2
Simplify the left side.
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Step 7.5.5.2.1
Cancel the common factor of .
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Step 7.5.5.2.1.1
Cancel the common factor.
Step 7.5.5.2.1.2
Divide by .
Step 7.5.5.3
Simplify the right side.
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Step 7.5.5.3.1
Divide by .
Step 7.6
Consolidate the solutions.
Step 8
Solve for .
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Step 8.1
Solve for .
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Step 8.1.1
Rewrite the equation as .
Step 8.1.2
Simplify .
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Step 8.1.2.1
Apply the distributive property.
Step 8.1.2.2
Multiply .
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Step 8.1.2.2.1
Multiply by .
Step 8.1.2.2.2
Multiply by .
Step 8.1.3
Move all terms not containing to the right side of the equation.
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Step 8.1.3.1
Subtract from both sides of the equation.
Step 8.1.3.2
To write as a fraction with a common denominator, multiply by .
Step 8.1.3.3
Combine and .
Step 8.1.3.4
Combine the numerators over the common denominator.
Step 8.1.3.5
Simplify the numerator.
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Step 8.1.3.5.1
Multiply by .
Step 8.1.3.5.2
Subtract from .
Step 8.1.4
Multiply both sides of the equation by .
Step 8.1.5
Simplify both sides of the equation.
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Step 8.1.5.1
Simplify the left side.
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Step 8.1.5.1.1
Simplify .
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Step 8.1.5.1.1.1
Cancel the common factor of .
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Step 8.1.5.1.1.1.1
Move the leading negative in into the numerator.
Step 8.1.5.1.1.1.2
Move the leading negative in into the numerator.
Step 8.1.5.1.1.1.3
Factor out of .
Step 8.1.5.1.1.1.4
Cancel the common factor.
Step 8.1.5.1.1.1.5
Rewrite the expression.
Step 8.1.5.1.1.2
Cancel the common factor of .
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Step 8.1.5.1.1.2.1
Factor out of .
Step 8.1.5.1.1.2.2
Cancel the common factor.
Step 8.1.5.1.1.2.3
Rewrite the expression.
Step 8.1.5.1.1.3
Multiply.
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Step 8.1.5.1.1.3.1
Multiply by .
Step 8.1.5.1.1.3.2
Multiply by .
Step 8.1.5.2
Simplify the right side.
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Step 8.1.5.2.1
Simplify .
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Step 8.1.5.2.1.1
Simplify terms.
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Step 8.1.5.2.1.1.1
Apply the distributive property.
Step 8.1.5.2.1.1.2
Combine and .
Step 8.1.5.2.1.1.3
Cancel the common factor of .
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Step 8.1.5.2.1.1.3.1
Move the leading negative in into the numerator.
Step 8.1.5.2.1.1.3.2
Factor out of .
Step 8.1.5.2.1.1.3.3
Cancel the common factor.
Step 8.1.5.2.1.1.3.4
Rewrite the expression.
Step 8.1.5.2.1.1.4
Combine and .
Step 8.1.5.2.1.1.5
Multiply by .
Step 8.1.5.2.1.2
Simplify each term.
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Step 8.1.5.2.1.2.1
Move to the left of .
Step 8.1.5.2.1.2.2
Move the negative in front of the fraction.
Step 8.2
Remove the absolute value term. This creates a on the right side of the equation because .
Step 8.3
The result consists of both the positive and negative portions of the .
Step 8.4
Solve for .
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Step 8.4.1
Move all terms containing to the left side of the equation.
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Step 8.4.1.1
Add to both sides of the equation.
Step 8.4.1.2
To write as a fraction with a common denominator, multiply by .
Step 8.4.1.3
Combine and .
Step 8.4.1.4
Combine the numerators over the common denominator.
Step 8.4.1.5
Add and .
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Step 8.4.1.5.1
Reorder and .
Step 8.4.1.5.2
Add and .
Step 8.4.2
Move all terms not containing to the right side of the equation.
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Step 8.4.2.1
Add to both sides of the equation.
Step 8.4.2.2
Write as a fraction with a common denominator.
Step 8.4.2.3
Combine the numerators over the common denominator.
Step 8.4.2.4
Add and .
Step 8.4.2.5
Move the negative in front of the fraction.
Step 8.4.3
Since the expression on each side of the equation has the same denominator, the numerators must be equal.
Step 8.4.4
Divide each term in by and simplify.
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Step 8.4.4.1
Divide each term in by .
Step 8.4.4.2
Simplify the left side.
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Step 8.4.4.2.1
Cancel the common factor of .
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Step 8.4.4.2.1.1
Cancel the common factor.
Step 8.4.4.2.1.2
Divide by .
Step 8.4.4.3
Simplify the right side.
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Step 8.4.4.3.1
Move the negative in front of the fraction.
Step 8.5
Solve for .
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Step 8.5.1
Simplify .
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Step 8.5.1.1
Rewrite.
Step 8.5.1.2
Simplify by adding zeros.
Step 8.5.1.3
Apply the distributive property.
Step 8.5.1.4
Multiply .
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Step 8.5.1.4.1
Multiply by .
Step 8.5.1.4.2
Multiply by .
Step 8.5.1.5
Multiply .
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Step 8.5.1.5.1
Multiply by .
Step 8.5.1.5.2
Multiply by .
Step 8.5.2
Move all terms containing to the left side of the equation.
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Step 8.5.2.1
Subtract from both sides of the equation.
Step 8.5.2.2
To write as a fraction with a common denominator, multiply by .
Step 8.5.2.3
Combine and .
Step 8.5.2.4
Combine the numerators over the common denominator.
Step 8.5.2.5
Subtract from .
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Step 8.5.2.5.1
Reorder and .
Step 8.5.2.5.2
Subtract from .
Step 8.5.2.6
Move the negative in front of the fraction.
Step 8.5.3
Move all terms not containing to the right side of the equation.
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Step 8.5.3.1
Add to both sides of the equation.
Step 8.5.3.2
Write as a fraction with a common denominator.
Step 8.5.3.3
Combine the numerators over the common denominator.
Step 8.5.3.4
Add and .
Step 8.5.4
Since the expression on each side of the equation has the same denominator, the numerators must be equal.
Step 8.5.5
Divide each term in by and simplify.
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Step 8.5.5.1
Divide each term in by .
Step 8.5.5.2
Simplify the left side.
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Step 8.5.5.2.1
Dividing two negative values results in a positive value.
Step 8.5.5.2.2
Divide by .
Step 8.5.5.3
Simplify the right side.
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Step 8.5.5.3.1
Divide by .
Step 8.6
Consolidate the solutions.
Step 9
Consolidate the solutions.
Step 10
Use each root to create test intervals.
Step 11
Choose a test value from each interval and plug this value into the original inequality to determine which intervals satisfy the inequality.
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Step 11.1
Test a value on the interval to see if it makes the inequality true.
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Step 11.1.1
Choose a value on the interval and see if this value makes the original inequality true.
Step 11.1.2
Replace with in the original inequality.
Step 11.1.3
The left side does not equal to the right side , which means that the given statement is false.
False
False
Step 11.2
Test a value on the interval to see if it makes the inequality true.
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Step 11.2.1
Choose a value on the interval and see if this value makes the original inequality true.
Step 11.2.2
Replace with in the original inequality.
Step 11.2.3
The left side does not equal to the right side , which means that the given statement is false.
False
False
Step 11.3
Test a value on the interval to see if it makes the inequality true.
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Step 11.3.1
Choose a value on the interval and see if this value makes the original inequality true.
Step 11.3.2
Replace with in the original inequality.
Step 11.3.3
The left side does not equal to the right side , which means that the given statement is false.
False
False
Step 11.4
Test a value on the interval to see if it makes the inequality true.
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Step 11.4.1
Choose a value on the interval and see if this value makes the original inequality true.
Step 11.4.2
Replace with in the original inequality.
Step 11.4.3
The left side does not equal to the right side , which means that the given statement is false.
False
False
Step 11.5
Test a value on the interval to see if it makes the inequality true.
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Step 11.5.1
Choose a value on the interval and see if this value makes the original inequality true.
Step 11.5.2
Replace with in the original inequality.
Step 11.5.3
The left side does not equal to the right side , which means that the given statement is false.
False
False
Step 11.6
Compare the intervals to determine which ones satisfy the original inequality.
False
False
False
False
False
False
False
False
False
False
Step 12
Since there are no numbers that fall within the interval, this inequality has no solution.
No solution
Step 13
Exclude the solutions that do not make true.
Step 14